Purple princess: Kate pulls off another fashion triumph as half a million turn out in Canada (but she only has eyes for her prince)

Half a million people lined the streets in searing 90F for Canada Day welcome parade

Duchess had recycled same white Reiss dress from official engagement portrait by Mario Testino

Pretty in purple: Prince William and the Duchess of Cambridge took part in Canada Day celebrations on Parliament Hill today

The Duke and Duchess of Cambridge enjoyed a concert in Ottawa last night to round off a busy Canada Day.

Kate dazzled in a purple Issa Jersey dress as the Royal couple laughed and clapped while they watched acts from across the country joining 100,000 people on Parliament Hill.

They were the guests of honour at the event which was part of the national celebrations marking Canada's 144th birthday. Kate had changed her clothes from her earlier red and white outfit - Canada's national colours - into the purple dress, making it an impressive five outfits in 24 hours.

Fashion queen: Kate wore a Issa Jersey dress with black shoes and had her hair swept back in a chignon. It was her fifth change in 24 hours

She was still wearing the maple leaf brooch, which the Queen has loaned her for the tour - a glittering diamond piece in the form of the national emblem of Canada.

The Duke and Duchess sat in the audience for around half an hour watching acts Great Big Sea, Tragically Hip and Weezer before leaving for a private event where they viewed the finale fireworks.

Earlier as they arrived for an official Canada Day show in an open-topped landau, the Duke and Duchess of Cambridge looked simply overwhelmed by the adulation – and the heat.

Intimate: Kate and William were seen laughing and joking at the music event but they also shared several romantic moments during the evening

Purple reign: Kate Middleton's outfit drew all the attention from the admirers on Parliament Hill last night

More than half a million flag waving people crammed the streets of the city – many having travelled hundreds, if not thousands of miles - just to catch a glimpse of the glamorous newly-weds in temperatures of more than 90F.

In a speech to the crowds at the event the Duke told them how he and his wife were 'excited' by the prospect of becoming 'part of the Canadian family' as they travel around the country during the next seven days.

The second-in-line to the throne said: 'To be here on Canada Day - a day of unity, a day of coming together as families, and as a nation - is even more special for us.'

Rapturous welcome: First job of the day for Prince William and his wife Catherine was at the Canadian Museum of Civilisation where they took part in a citizenship ceremony to mark Canada Day. The Duchess of Cambridge wore a red hat with maple leaves

Spectacular: The Duke and Duchess of Cambridge arrive by horse drawn landau to Parliament Hill in Ottawa

Flourish: The Duchess smiles for the cameras as she shows off her hat by Sylvia Fletcher for Lock and Co

Family heirloom: The Maple Leaf brooch as worn by Kate, left, and by Princess Elizabeth, right, in 1951 when she also visited Canada

While many were keen to see the prince, there is little doubt that it is Kate, 29, who is winning their hearts in what is widely considered to be a dress rehearsal for the rest of her public life.

Television channels and newspapers are offering wall to wall coverage of the new Duchess’s charm offensive - and while she insists she doesn’t want to be seen as just a ‘clothes horse’, Kate did not disappoint.

In her first 24 hours on Canadian soil there have no fewer than five different outfits, beginning with the £575 smart navy Smythe les Vestes blazer, Roland Mouret shift and Manolo Bhlanik pumps she sported on leaving Heathrow on Thursday.

Duke and Duchess of Cambridge attend Canada Day concert

"To Be Here On Canada Day Is Even More Special For Us" Prince William's Canada Day Speech